Answer:
there is only one easy way to sole this
using quadratic equation
Step-by-step explanation:
a=6 b=5 c=-6
and by applying it to the equation you will get
x=0.66 and x=-1.5
Mary is preparing for her college entrance exams. In a practice test, she answered 15 problems in 45 minutes. At this rate, how
1 answer:
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If the mean value of the data set is 509. Then the mean absolute deviation (MAD) for the data set will be 51.5.
<h3>What is the mean absolute deviation?</h3>It is the average distance between each data point and the mean.
The mean of the following data is 509.
{419, 450, 462, 499, 520, 521, 589, 612}
Then the mean absolute deviation (MAD) for the data set will be
We have
μ = 509
n = 8
Then
More about the mean absolute deviation link is given below.
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First define the variables:
c = amount of children
a = amount of adults
Next create the equations to satisfy the conditions:
1) Total group is 12 people:
2) Total cost is $100 with adults costing $10 and children being $6: